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VulnerabilityPublished

CVE-2026-33957: Samsung Exynos 1580 firmware · Out-of-bounds Write

Affects Samsung Exynos 1580 firmwareSource CVE Database V5

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Not known to be exploited · CVSS 4.2 Medium.

Data as of 29 Oct 2026, 10:09 UTC

CVSS 3.1 base score
4.2Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
SamsungExynos 1580 firmwareAffected
  • <=2026-01-07
Fixed in–

AI-suggested

Until a fix is available, limit local access to trusted users and monitor for suspicious activity related to the custos_iwc device.

Description

An issue was discovered in CustOS Driver in Samsung Mobile Processor Exynos 1580. Requesting oversized shared memory from the custos_iwc device enables out-of-bounds read and write, potentially leading to memory corruption or information leakage.

References

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